Improvement in crimping-machines for leather



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S. W. JAMISON.

CRIMPING MACHINES FOR LEATHER. No. 176,181. Patented Apr'1118, 1876.

XVI W 3 Sheets-Sheet 2. S. W. JAMISON.

CRIMPING MACHINES FOR LEATHER. N0.176,181. Patented Apr'1118, 1876.

7775573055 Inward/77;"

N.FETERS, PNOTO-UTHOGRAPHER. WASHINGTON. D. C.

BShe'ets-Sheet. S. W. JAMISON. CRIMPING MACHINES FOR LEATHER.

Patented AprillS, 1876.

1 Y r m .y 4 F N Wz'fiamurem MW UNITED STATES PATENT QFFIGE.

SAMUEL W. JAMISON, OF NEWARK, NEW JERSEY, ASSIGNOR TO. THE S. W. JAMISONBOOT AND SHOE ORIMPING MACHINE COMPANY, OF

NEW YORK, N. Y.

IMPROVEMENT IN CRlMPlNG-MACHINES FOR LEATHER.

Specification forming part of Letters Patent No.176, 181, dated April18, 1876; application filed December 14, 1875. I

To all whom it may concern:

Be it known that I, SAMUEL W. JAMISON, of Newark, Essex county, NewJersey, have invented certain new and useful Improvements inCrimping-Machines for Boots and Shoes, of which the following is aspecification:

My present invention comprises improvements on machinery of the kinddescribed and shown in Letters Patent of the United States heretoforegranted me May 7 1867 N 0. 64,583, February 15, 1870, No. 99,906,reissued June 29, 1875, No. 6,526, and June 10, 1873, No. 139,717,reissued June 29, 1875, No. 6,525.

In my present machine I dispense entirely with the heavy fixed framethat in the former machines surrounds and surmounts the adjustable wayupon which the jaws move, and I mount the belt-pulleys and belt-shipperon a bracket attached to the pedestal of the machine.

The jaws, instead of being moved up and down by rack and pinion, are nowoperated by upright rotating screw-threaded shafts, which move the jawswith as much certainty as before, and at the same time sustain them withgreater ease, and remove liability of their dropping, by reason of theirweight, when the machine stops.

In my Letters Patent of February 15, 1870, I described a laterallyself-adjusting tree or form. I have improved this feature of mymachineby bringing the self-adjusting supports of the tree. up highenough to cause them to respond instantly to any side pressure upon thetree. In my patented machine last referred to the tree was adjustablycon nected at its lower end to the pedestal, and this arrangement wasunsatisfactory, in that the tree, when pressed upon by the jaws at itstop, would at times simply bend to one side or the other, instead ofmoving bodily. I have also simplified the arrangement of the weightedlevers and their connections, which exercise pressure upon thecrimping-jaws.

In the drawings, Figure 1 is a perspective front view of acrimping-machine embodying my improvements. Fig. 2 is a rear elevationof the same. Fig. 3 is a plan of the belt-shipper.

The working parts of the machine are supported by a pedestal, A. To thispedestal are hinged the upright ways K J. Upon the former-move the lowerset of jaws D; upon the latter move the upper set of jaws E. These jawsare arranged and combined with each other and with their hinged ways, inall essential respects as described in my Letters Patent No. 139,717, ofJune 10, 1873, where the sameparts are indicated by the same letters ofreference. They, therefore, require no further description here.

In lieu of moving the jaws by rack and pinion, I now operate them bymeans of upright screw-shafts B, which are located one on each side ofthe machine between the inner waysJ J, and are mounted and supported inboxes in thcbases of the ways. The shafts pass through screw-threadedboxes or bosses G on the brackets of the jaws E, and they are rotated bymeans of beveled gears a on their lower ends, which engage like gearingb on the horizontal driving-shaft c, which is supported in suitablebearings in the pedestal A, and carries the center tight pulley l andside loose pulleys 2 3. The pulley-bearing end of the shaft is supportedin a bracket on the side of the pedestal, which bracket also supportsthe belt-shipper hereinafter described. So slight is the movement of theways J that it may take place without affecting in any material degreethe engagement or working of the beveled gears 01, b. V

I have simplified the means for'pressing together the jaws, by employingwith each set of ways K J a connecting rod or shaft, I, which has aright-hand screw-thread on one end, and a left-hand screw-thread on theother. Each shaft F extends across between, and connects its set ofways, entering correspondingly internally screw-threaded boxes 0 at thetop of the ways. The shafts, when turned in one direction, will drawtheir ways together. When turned in the opposite direction they willspread their ways apart; Each shaft, of course, can be rotatedindependently of the other. They are connected, however, (to preventinjurious lateral movements, and to preserve the vertical alignment ofthe two sets of jaws,) by a peripheral spline or rib, d, on the oneentering the peripheral groove e on the other.

From the shaft F, that controls the ways K, projects an arm, f, that isconnected by a jointed rod, g, to a lever, h, on which is an adjustableweight, 1'. This weight tends to pull down the armf, and to turn theshaft F in 'the direction required to induce the movement of the jawstoward each other. The other arm of lever 7t terminates in a treadle, h,by depressing which the weight is elevated, and the shaft F turned tocause the pressure exercised by the jaws to relax. From thatshaft, F,which controls the ways J there projects a lever-arm, f, upon which isan adjustable weight, 1 which operates in the same way and for the samepurpose as does the weighti upon its shaft.

' Any suitable treadle arrangement for relaxing the pressure of the jawsE may be used, althoughI find that such an arrangement is not for thesejaws very necessary, and in lieu of the special treadle arrangementshown any suitable arrangement for the purpose may be employed, whetherto be operated by the hand or foot or automatically.

It is manifest that in case the arrangement of the machine isreversed-that is to say, in case the jaws remain at rest, and thecrimpingform moves-the above-described arrangement of right and leftscrew-threaded shaft, lever, and adjustable weight may readily beapplied to the jaws.

The tree or crimping-form is shown at N. Its connection with the machineis in this instance at a point considerably above the pedestal, and inthe neighborhood ofthat is, in nearly the same horizontal plane as thatpoint where the jaws and tree first come in contact. I do not, ofcourse, limit myself to this precise location; but it is very necessary,in order to secure proper bodily adjustment of the tree, that theconnection should be made at some point in proximity to that indicated.The connection is formed in this instance by slides j, with dovetailedprojections on their under faces, which fit in dovetailed ways orgrooves formed in the tops of supportingstandanls 7r, one at each end ofthe tree. The slides can move in the ways with freedom, and I have foundthat under the described arran gement thetree will respond instantly, byproper change of position, to any change in position or adjustment ofthe jaws. So sensitive, indeed, is it that I have found it unnecessaryto adjust the two jaws of each set to difi'erent thicknesses of leather.I, therefore, as indicated in the drawing, am enabled to, and do,dispense on one side of the machine (on the right of the machine, inFig. 1) with the devices represented in my Letters Patent of February15, 1870, and June 10, 1873, for setting the jaws at different distancesapart, thus saving in the cost of manufacture and enabling the workmanto more quickly eifectachange of adjustment. The jaws on the left of themachine in Fig. l are arranged for their diiferent adjustments, and areconnected with their brackets, in all essential respects, as indicatedin my two last above mentioned Letters Patent. The same remark isapplicable to the jaws on the right of the machine, with the exceptionabove noted.

The belt-shipper, shown particularly in Fig. 3, is substantially thatdescribed in Letters Patent No. 113,939, dated April 18,1871, to N. H.H. Sisum, and therefore will require no further description here. Toadapt this device to my machine, I connect the slotted sliding bar I ofthe shipper by a jointed connecting-rod, m, with a vibratory arm orlever,

n, pivoted at a to one of the ways J. This lever is a three-armed lever.That arm, which is on the prolongation of the longer arm, is providedwith a friction-roll, 0. The arm 19 that projects at right anglesconnects by a rod, 1', with an elbow or bell-crank lever, s, pivoted tothe way J near its top. The lever s carries on its free arm afriction-roll, 25. To the connecting-rod r is jointed a leverhandle, c,which is pivoted to the way K, and which can be vibrated on its pivot tomove the connecting-rod 0" up and down. When the rod is moved down itwill-throw the friction-roll t inward and the roll 0 outward. In thisposition the roll 8 will stand in the path of a double-beveledprojection, 20, on the bracket J of the jaw J. The movement of therod toits extreme reverse position will throw the roll 0 in the positionbefore occupied by rolls.

When the handle "a is in a central position between the two extremes ofits movement, neither roll will be in the path of projection to. Tocause the jaws to descend the handle o is depressed to its lowestposition. This will throw the belt upon the tight pulley, that willcause the shaft to revolve in the proper direction to effect thedescentof the jaws, and will, at the same time, throw the lower roll 0inward in the path of projection w. When the jaws have descended farenough projection to strikes against roll 0, throws it outward, and soshifts the driving-belt to its loose pulley, thus arresting the machine.To move the jaws upward the lever-handle c is lifted to its highestposition, throwing the proper belt on the tight pulley, and, at the sametime, bringing the upper roll 8 in the path of projection w. \Vhen thelatter strikes the roll 8 the shipper will be operated to cause thedriving-belt to shift from the tight pulley to its loose pulley. In thisway I arrest the movement of the machine at the times required.

The pedestal A is provided with stops or shoulders 00, which arrest theinward move ment of the ways at the proper point, and serve to maintainthem in substantially an upright position.

I have above intimated that the jaws can be operated to automaticallyopen and close. An arrangement of mechanism for this purpose is shown inFig. 4, which is a perspective view of the machine from the rear.

The treadle mechanism in this instance is dispensed with, and the shaftF that controls the ways K is provided with a lever-arm, f andadjustable weight 1' similar to the arm and weight on the shaft F thatcontrols the ways J. To one of the sliding brackets or bases K of thejaws D is attached an upright bar, P, which is in the path of a pin orprojection, y, on the arm f The arrangement is such that when the jawsrise the upper end of the lifting-bar comes in contact with pin a andthus raises the arm f with its weight '6 the distance required to spreadthe jaws apart. When this is accomplished the end of the bar clears andpasses by the pin, and the arm f consequently ceases to rise, althoughheld in its elevated position by the pin 3 resting against the side ofthe bar. To enable the bar to withstand this strain an abutment orbrace, z, is provided in rear of the bar, having a friction-roller, 4,against which the back of the bar runs.

The movement of the parts is, preferably, so timed that when the jawsdescend the liftingbar drops the weighted arm and quits the pin y at thetime the jaws reach the crimpingform, and the goods to be crimped havejust about entered the jaws. A similar arrangement is provided for thejaws E, the parts be ing marked P 3 z 5. The lifting-bar P is attachedto one of the supporting-brackets J of the jaws E, and the parts areconstructed and arranged to operate the jaws E under conditions similarto those under which similar parts operate the jaws D, as justspecified.

Haring described my invention, and the manner in which the same is ormay be carried into effect, I shall state my claim as follows:

1. In a crimping-machine, having moving jaws combined with adjustableguideways, as described, the combination, with the guideways and thejaw-supporting brackets, of r0 tating screw-threaded shafts or rods,which support and give motion to said brackets, substantially as setforth.

2. In a machine for crimping boots and shoes, the combination, for thepurpose of forcing together the crimping-jaws, of laterallymovablejawsupporting ways, a right and left screw-threaded shaft, a lever-arm,and a weight adjustable thereon, substantially as set forth.

3. The combination, in a crimping machine, of these elements, namely,laterally-moving jaw-supporting ways, a right and left screwthreadedshaft, a lever-arm on said shaft, a weight adjustable on the lever-arm,and mechanism by which the shaft may be rotated in a direction oppositeto that in which the weight tends to move it, substantially as shown andset forth.

4. The combination, with each set of hinged ways, whether one or moresets be employed, 'of the right and left screw-threaded shaft and itsadjustably-weighted lever, substantially as set forth.

5. The crimpii-ig-form, in combination with its laterally self-adjusting slides, and the supports for the same; but this combination is claimedonly when the said slides and sup ports are arranged and located withreference to the crimping-form, as shown and specified.

6. The combination, with the described beltshipping mechanism, of thelevers, connectingrod, and handle, constructed and arranged to operatetogether and in connection with a tripper or incline 011 one of thejaw-brackets, substantially as set forth.

7. The combination of the hinged ways, the vertical screw-shafts thatmove and support the jaws, the pedestal, and the driving-shaft, pulleys,and shipper, arranged in and carried by the pedestal, for operation asset forth.

8. The combination, with the right and left screw-shaft for controllingthe pressure of the jaws, of a lifting-bar, moving with thecrimping-jaws, and an adjustably-weighted leverarm, provided with a pinor other projection to engage the lifting-bar, substantially in themanner set forth. 7

9. The right and left screw-threaded shaft and its adjustably-weightedlever-arm, in combination with the lifting-bar, back brace, andfriction-roller, substantially as set forth.

In testimony whereof I havehereunto signed my name this 20th day ofNovember, A. D. 1875.

s. w. JAMISON.

Witnesses:

B. F; STONE, MELVILLE BIGGS.

